Between the Pixel 9a and MIX Fold 4, the Pixel 9a comes out ahead in weight and pixel density, while the MIX Fold 4 wins on wireless charging and wired charging. Overall, the Pixel 9a scores 63.2 and the MIX Fold 4 scores 71.4 on our Mars Score.
Which should you buy?
The MIX Fold 4 is the clear pick on raw spec strength, leading by 8.2 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Pixel 9a if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are weight, pixel density, promised os updates.
Pick the MIX Fold 4 if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. Its strongest claims are wireless charging, wired charging, ram, among others.
Both ship with comparable battery capacity, refresh rate, 5g support, so those specs don't separate the two — focus on the differences below.
Bottom line: the MIX Fold 4 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Google - Pixel 9a wins
- ▲Weight — 40.00 g less. 186 vs 226.
- ▲Pixel density — 4.98% more. 422 ppi vs 402 ppi.
- ▲Promised OS updates: 7 (vs 4).
Why Xiaomi - MIX Fold 4 wins
- ▲Wireless charging — 566.67% more. 50 W vs 7.5 W.
- ▲Wired charging — 191.30% more. 67 W vs 23 W.
- ▲RAM — 100.00% more. 16 GB vs 8 GB.
- ▲AnTuTu — 64.52% more. 2040000 vs 1240000.
- ▲Front camera — 53.85% more. 20 MP vs 13 MP.
- ▲Screen size — 26.67% more. 7.98 " vs 6.3 ".
- ▲Main camera — 4.17% more. 50 MP vs 48 MP.
- ▲Water resistance: IPX8 (vs IP68).
Spec comparison
Design
| Spec | Google - Pixel 9a | Xiaomi - MIX Fold 4 |
|---|---|---|
| Weight | 186 glead | 226 g |
| Thickness | 8.9 mmlead | 9.47 mm |
| Water resistanceⓘ | IP68 | IPX8lead |
| Form factor | bar | foldable_booklead |
Display
| Spec | Google - Pixel 9a | Xiaomi - MIX Fold 4 |
|---|---|---|
| Screen sizeⓘ | 6.3 " | 7.98 "lead |
| Pixel densityⓘ | 422 ppilead | 402 ppi |
| Refresh rateⓘ | 120 Hz | 120 Hz |
| Peak brightnessⓘ | 2700 nits | 3000 nitslead |
Performance
Cameras
| Spec | Google - Pixel 9a | Xiaomi - MIX Fold 4 |
|---|---|---|
| Main cameraⓘ | 48 MP | 50 MPlead |
| Front camera | 13 MP | 20 MPlead |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | Google - Pixel 9a | Xiaomi - MIX Fold 4 |
|---|---|---|
| Battery capacity | 5100 mAh | 5100 mAh |
| Wired chargingⓘ | 23 W | 67 Wlead |
| Wireless chargingⓘ | 7.5 W | 50 Wlead |
Connectivity
| Spec | Google - Pixel 9a | Xiaomi - MIX Fold 4 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | Google - Pixel 9a | Xiaomi - MIX Fold 4 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 7 yearslead | 4 years |
Frequently asked
Which has better battery, Pixel 9a or MIX Fold 4?+
MIX Fold 4 has 0.0% more battery — 5100 mAh vs 5100 mAh.
Which is lighter, Pixel 9a or MIX Fold 4?+
Pixel 9a is 40g lighter — 186g vs 226g.
Is Pixel 9a waterproof?+
Pixel 9a has an IP68 rating.
Does MIX Fold 4 support 5G?+
Yes, MIX Fold 4 supports 5G.
Which has more RAM, Pixel 9a or MIX Fold 4?+
MIX Fold 4 offers 16GB of RAM.
Which has a better camera, Pixel 9a or MIX Fold 4?+
MIX Fold 4 has a 50 MP main camera vs 48 MP.
Spec-level deep dives
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